Question

Which is also called as abstract class?

(a) virtual function

(b) pure virtual function

(c) derived class

(d) base class

I got this question in an online interview.

The doubt is from Abstract Classes in section Derived Classes, Templates & Exception Handling in C++ of C++

Answer 1

Correct option is (b) pure virtual function

The explanation: Classes that contain at least one pure virtual function are called as abstract base classes.